HP HP-67 - Page 170

166 Program Editing
The following program calculates the time it takes for an object
to fall to the earth when dropped from a given height. (Friction
from the air is not taken into account.) When the program is
initialized by keying the height & in meters into the displayed
X-register and (¥ is pressed, the time ¢ in seconds the object
takes to fall to earth is computed according to the formula:
2d
9.8 meters/sec?
a. Clear all previously recorded programs from the calculator
and load the program below.
001 [ )&
002 E0ED
003
004
005
006
007
008
009 1
010 [ RN
EE0EER
b. Run the program to compute the time taken by a stone to
fall from the top of the Eiffel Tower, 300.51 meters high; from
a blimp stationed 1000 meters in the air.
(Answers: 7.83 seconds; 14.29 seconds)
c. Alter the program to compute the time of descent when the
height in feer is known, according to the formula:
2d
t= 32.1740 feet/sec?